select of select box will select multiple in another box

I have 2 select boxes, both are pre populated with data. The first box
is a single select box, the 2nd is a multiple select box. Depending on
the 1st selection, I want to have multiple values in the second select
box highlighted.

Share This Page

Welcome to The Coding Forums!

Welcome to the Coding Forums, the place to chat about anything related to programming and coding languages.

Please join our friendly community by clicking the button below - it only takes a few seconds and is totally free. You'll be able to ask questions about coding or chat with the community and help others.
Sign up now!